US PATENT SUBCLASS 252 / 78.1
.~.~.~ Organic compounds of nonmetals other than C, H, O, and N

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

71  DF  HEAT-EXCHANGE, LOW-FREEZING OR POUR POINT, OR HIGH BOILING COMPOSITIONS {2}
73  DF  .~ Organic components {3}
77  DF  .~.~ Organic compounds of nonmetals other than C, H, and O {1}
78.1.~.~.~ Organic compounds of nonmetals other than C, H, O, and N {2}
78.3  DF  .~.~.~.~> Organic Si containing compounds
78.5  DF  .~.~.~.~> Organic P containing compounds

DEFINITION

Classification: 252/78.1

(under subclass 77) Compositions containing organic compounds which have nonmetallic elements other than carbon, hydrogen, oxygen and nitrogen.